Commonly asked questions: What inert substance should be used when Pharmacist scale cannot weigh small quantities?

If your balance can not weigh small amounts, dissolve 640mg of Micronized Betamethasone Dipropionate USP into 50cc of 99% isopropyl alcohol 12.8mg stock solution =1cc. Add 5cc of this to 120cc DermaZinc™ Spray, or 6cc to DermaZinc™ Cream (120gm) or 11cc to DermaZinc™ Shampoo (240ml). A better way to treat the scalp is to use DermaZinc™ Shampoo in conjunction with DermaZinc™ w/ Betamethasone Dipropionate USP product using the dropper tip. The rational is that the Rx Shampoo is washed out quickly whereas you massage in the drops. Estimated stability once compounded is six months. Estimated stock solution stability is one year from date of compounding.